Título:	Cover crops affect on soil organic matter fractions under no till system.
Autoria:	ENSINAS, S. C. SERRA, A. P. MARCHETTI, M. E. SILVA, E. F. da PRADO, E. A. F. do LOURENTE, E. R. P. ALTOMAR, P. H. POTRICH, D. C. MARTINEZ, M. A. CONRAD, V. do A. JESUS, M. V. EL KADRI, T. C.
Afiliação:	SIMONE CÂNDIDO ENSINAS, UFGD; ADEMAR PEREIRA SERRA, CNPGC; MARLENE ESTEVÃO MARCHETTI, UFGD; EULENE FRANCISCO DA SILVA, UFERSA; EBER AUGUSTO FERREIRA DO PRADO, UFGD; ELAINE REIS PINHEIRO LOURENTE, UFGD; PEDRO HENRIQUE ALTOMAR, UFGD; DOUGLAS COSTA POTRICH, UFGD; MATHEUS ANDRADE MARTINEZ, UFGD; VANESSA DO AMARAL CONRAD, UFGD; MAÍLSON VIEIRA JESUS, UFGD; TÁRIK CAZEIRO EL KADRI, UFGD.
Ano de publicação:	2016
Referência:	Australian Journal of Crop Science, v. 10, n. 4, p. 503-512, April, 2016.
Conteúdo:	The purpose of this research was to identify the soil organic matter (SOM) fractions changes in a crop rotation system under no-till system (NTS). This research was carried out from October 2010 to February 2014 in a Rhodic Hapludox. The experiment was set up in completely randomized blocks in a factorial design with eight cover crops and three soil depths (0-5, 5-10 and 10-20 cm) with four repetitions. Cover crops: fall-winter corn, intercropping fall-winter corn with Brachiaria ruziziensis, intercropping fall-winter corn with B. brizantha cv. Marandu, intercropping fall-winter corn with Crotalaria spectabilis, B. ruziziensis, B. brizantha cv. Marandu, Pennisetum glaucum L. and set-aside area. The results of SOM granulometric fractionation showed that 6.5% of the total organic carbon (TOC) stocks were in the particulate organic carbon (POC) fraction. The low values of POC observed in this research are associated with the weather condition of experimental site, which shows high temperature and moisture. In relation to the labile carbon (LC), the highest LC stock was observed in 0-5 cm depth, which differed from the 10-20 cm depth. The POC, LC and labile nitrogen (LN) were the SOM fractions that showed to be more sensitive to detect the changes promoted by the cover crops and soil depths in NTS, as well as the carbon management index (CMI). The intercropping fall-winter corn with B. brizantha cv. Marandu and B. ruziziensis were efficient in increasing the CMI in deeper depth (10-20 cm).
NAL Thesaurus:	Soil organic carbon Conservation tillage Soybeans
Palavras-chave:	Labile carbon Sustainability Carbono orgânico do solo
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPGC)